Thematic analysis of development sections in Ludwig van Beethoven's all piano sonata with reference to op. 101, op. 106, op. 109, op. 110 and op. 111.

This study is an analytical review of the thematic structure of Development sections of first movements of Ludwig van Beethoven's all piano sonatas in the Sonat-Allegro form with reference to Late Piano Sonatas. In the Introduction section of the study; "classification of Beethoven's piano sonatas" is discussed, followed by the second part where the method of work is exhibited. In the third chapter (Analysis), a comprehensive analysis, consisting of "determination of the formal structure and general characteristics such as length and mode for each movement", "discovering origins of materials used in the Development sections regarding their relationships with the formal elements in the Exposition", "determining these materials' amount of use in Development sections", is carried out for each movement of the Late Periods. After the thematic analysis of the developmental sections of the first movements of the Late Period piano sonatas is evaluated in the obtained findings, periodical comparative and collective evaluations are made on all the sonatas together with the results obtained in the previous thesis studies of Ferhat Çaylı's "Thematic Analysis of Development Sections in Ludwig Van Beethoven's Early Piano Sonatas" (2014) and "Thematic Analysis of Development Sections in Ludwig Van Beethoven's Mid-Term Piano Sonatas" by Saime Zeynep Aydın. It was concluded that; in the light of findings obtained from all periods the movements are grouped as "Short", "Medium" and "Long" according to their lengths, ,10 different kinds of materials are used in the Development sections, the most frequently used materials are of Theme 1, the usage rate of the materials from Theme 1 increases as the periods progress, at the beginnings and endings of the development sections, the certain thematic templates of "Theme 1" are used predominantly, the use of the accompaniments outside of their thematic contexts decreases as the periods progress.